List of VT Host Interface Functions 12-Jan-94 Introduction This section provides tables showing ANSI host interface control functions that should be supported by software terminal emulation. To simplify understanding the huge number of functions and corresponding rich interface, this section is divided into a number of largely independent subsections and tables which describe functionally related parts of the ANSI host interface. These subsections are: Code Extension Functions Control Coding Character Coding Graphic Character Sets Terminal Management Functions Character Cell Display Service Class Display Coordinate System and Addressing * Active Position and Cursor * Margins and Scrolling * Cursor Movement * Horizontal Tabulation * Page Size and Arrangement * Status Display * Right to Left Window Management Visual Attributes and Renditions Audible Indicator Mode States Editing Functions OLTP Features Saving and Restoring terminal State Keyboard Processing Functions Soft Key Mapping (UDK) Soft Fonts (DRCS) Printing Terminal Communication and Synchronization Text Locator Extension Session Management Extension Documented Exceptions Page 1
Code Extension Functions Control Coding CAN Cancel SUB Substitute ESC Escape DCS Device Control String CSI Control Sequence Introducer ST String Terminator OSC Operating System Command DECterm PM Privacy Message APC Application Program Command VT420 S7C1T Select 7-bit C1 Transmission S8C1T Select 8-bit C1 Transmission Character Coding Announce Subset of Code Extension Facilities VT320 LS0 Locking Shift Zero (SI) LS1 Locking Shift One (SO) LS2 Locking Shift Two LS3 Locking Shift Three LS1R Locking Shift One Right LS2R Locking Shift Two Right LS3R Locking Shift Three Right SS2 Single Shift Two SS3 Single Shift Three Graphic Character Sets SCS Select Character Set ASCII DEC Special Graphics (Line Drawing) DEC MCS ISO Latin-1 VT320 UPSS VT320 DEC Technical ISO Latin-2, Hebrew, Greek, Cyrillic, Turkish DECNRCM (National Replacement) Character Set Mode DECAUPSS Assign User-Preference Supplemental Set VT320 DECRQUPSS Request User-Preference Supplemental Set VT320 Page 2
Terminal Management Functions Identification, status, and Initialization DA1 Primary Device Attributes DA2 Secondary Device Attributes DECRPTUI Report Terminal Unit ID VT420 DSR Device Status Report DECID Identify Device DECTID Select Terminal ID DECSCL Select Conformance Level DECSR Secure Reset VT420 DECSRC Secure Reset Confirmation VT420 DECSTR Soft Terminal Reset DECSTUI Set Terminal Unit ID (Restricted) VT420 RIS Reset to Initial state Emulations DECPCTERM Enter/Exit PC Term Mode from DEC VT mode VT420PC DECTME Terminal Mode Emulation Set-Up DECSSL Select Set-Up Language DECCRTSM CRT Save Mode (not required) DECOSCNM Overscan Mode DECSRFR Select Refresh Rate DECLTOD Load Time of Day DECLBAN Load Banner Message Page 3
Display Coordinate System and Addressing Active Position And Cursor DECTCEM Text Cursor Enable Mode DECSCUSR Set Cursor Style Margins And Scrolling DECSTBM Set Top and Bottom Margin DECSLRM Set Left and Right Margin VT420 DECLRMM Left Right Margin Mode VT420 DECOM Origin Mode DECSCLM Scrolling Mode IND Index RI Reverse Index DECFI Forward Index VT420 DECBI Back Index VT420 DECSSCLS Set Scroll Speed Cursor Movement BS Backspace LF Line Feed VT Vertical Tab FF Form Feed CR Carriage Return NEL Next Line LNM Line Feed/New Line Mode CUU Cursor Up CUD Cursor Down CUF Cursor Forward CUB Cursor Backward CUP Cursor Position HVP Horizontal/Vertical Position CPR Cursor Position Report DECXCPR Extended Cursor Position Report CHA Cursor Horizontal Absolute CNL Cursor Next Line CPL Cursor Previous Line HPA Horizontal Position Absolute HPR Horizontal Position Relative VPA Vertical Line Position Absolute VPR Vertical Position Relative Horizontal Tabulation HT Horizontal Tab HTS Horizontal Tabulation Set TBC Tabulation Clear CBT Cursor Backward Tabulation CHT Cursor Horizontal Forward Tabulation DECST8C Set Tab at every 8 columns VT420PC Page Size and Arrangement DECCOLM Column Mode DECNCSM No Clear Screen on column Mode DECSCPP Set Columns Per Page DECSLPP Set Lines Per Page Page Movement Page 4
NP Next Page PP Preceding Page PPA Page Position Absolute PPR Page Position Relative PPB Page Position Backward Status Display DECSASD Select Active Status Display VT340, VT320 DECSSDT Select Status Display Type VT340, VT320 Right to Left DECRLM Right to Left Mode DECRLCM Right to Left Copy Mode DDD1 mode Hebrew DDD2 mode Hebrew DDD3 mode Hebrew Page 5
Window Management DECHCCM Horizontal Cursor Coupling Mode DECVCCM Vertical Cursor Coupling Mode DECPCCM Page Cursor Coupling Mode DECRQDE Request Displayed Extent DECSNLS Select Number of Lines per Screen (exception) VT420 DECARSM Auto Resize Mode DECterm, VT420 SU Pan Down SD Pan Up Visual Attributes and Renditions DECSCNM Screen Mode Line Renditions DECSWL Single Width Line DECDWL Double Width Line DECDHLT Double Height Line Top DECDHLB Double Height Line Bottom Character Renditions SGR Select Graphic Rendition 0=all off 1=bold 4=underscore 5=blink 7=reverse 22=not bold 24=non underline 25=not blink 27=non reverse Audible Indicators BEL Warning Bell DECSKCV Set Keyclick Volume DECSWBV Set Warning Bell Volume DECSMBV Set Margin Bell Volume Page 6
Mode States SM/RM Set Mode/Reset Mode ANSI 20=LNM 2=KAM 4=IRM VT102 12=SRM 3=CRM DEC Private 1=DECCKM 2=DECANM 3=DECCOLM 4=DECSCLM 5=DECSCNM 6=DECOM 7=DECAWM 8=DECARM 18=DECPFF 19=DECPEX 25=DECTCEM 42=DECNRCM 60=Horizontal Cursor Coupling 61=Vertical Cursor Coupling 64=Page Cursor Coupling 66=DECNKM VT320 67=DECBKM 68=DECKBUM VT320 69=DECLRMM (DECVSSM) 73=DECXLRM VT420 81=DECKPM VT420 34=DECRLM 35=DECHEBM 36=DECHEM 57=DECNAKB 95=DECNCSM 96=DECRLCM 98=DECARSM 99=DECMCM 100=DECAAM 101=DECCANSM 102=DECNULM 103=DECHPDXM 104=DECESKM 106=DECOSCNM 108=DECNUMLK 109=DECCAPSLK 110=DECKLHIM Editing Functions Page 7
IRM Insert/Replacement Mode VT102 ICH Insert Character VT102 DCH Delete Character VT102 IL Insert Line DL Delete Line DECIC Insert Column VT420 DECDC Delete Column VT420 ECH Erase Character EL Erase in Line DECSEL Selective Erase in Line ED Erase in Display DECSED Selective Erase in Display DECSCA Select Character Attribute (selective erase) OLTP Features Rectangular Area Operations DECCRA Copy Rectangular Area VT420 DECFRA Fill Rectangular Area VT420 DECERA Erase Rectangular Area VT420 DECSERA Selective Erase Rectangular Area VT420 DECCARA Change Attribute in Rectangular Area VT420 DECRARA Reverse Attribute in Rectangular Area VT420 DECSACE Select Attribute Change Extent Mode VT420 Data Integrity DECRQCRA Request Checksum of Rectangular Area VT420 DSR Device Status Report (Memory Checksum) VT420 DECCKSR Checksum Report VT420 Macros DECDMAC Define Macro VT420 DECINVM Invoke Macro VT420 DECMSR Macro Space Report VT420 Page 8
Saving and Restoring Terminal State Cursor Save Buffer DECSC Save Cursor DECRC Restore Cursor Terminal State Interrogation DECRQM Request Mode VT320 DECRPM Report Mode VT320 DECNKM Numeric Keypad Mode VT320 DECRQSS Request Selection or Setting VT320 DECRPSS Report Selection or Setting VT320 DECRQPSR Request Presentation State Report VT320 DECPSR Presentation State Report VT320 DECCIR Cursor Information Report VT320 DECTABSR Tabulation Stop Report VT320 DECRSPS Restore Presentation State VT320 DECRQTSR Request Terminal State Report VT320 DECTSR Terminal State Report VT320 DECRSTS Restore Terminal State VT320 Keyboard Processing Functions DECARM Autorepeat Mode DECBKM Backarrow Key Mode VT420 DECCKM Cursor Keys Mode DECEKBD Extended Keyboard Report VT420 DECKBUM Keyboard Usage Mode VT320 DECKPAM Keypad Application Mode DECKPM Key Position Mode VT420 DECKPNM Keypad Numeric Mode DECNKM Numeric Keypad Mode VT320 DSR Device Status Report (keyboard status) KAM Keyboard Action Mode DECLFC Local Functions Control VT420 DECLFKC Local Function Key Control VT420 DECSMKR Select Modifier Key Reporting VT420 DECHEBM Hebrew Keyboard Map mode DECHCEM Hebrew Encoding Mode DECNAKB NA/Greek Selection DECESKM Secondary Keyboard Language Mode DECSLCK Set Lock Key Style DECKBD Keyboard Dialect Selection DECNUMLK NumLock Mode DECCAPSLK CapsLock Mode DECKLHIM Keyboard LEDs Host Indicator Mode DECLL Load LEDs Page 9
Soft Key Mapping (UDK) DECUDK User Defined Keys DSR Device Status Report (UDK lock) DECPKA Program Key Action DECPFK Program Function Key DECPAK Program Alphanumeric Key DECCKD Copy Key Default DECRQPKFM Program Key Free Memory Inquiry DECPKFMR Program Key Free Memory Report DECRQKT Inquire a Key Type DECRPKT Report a Key Type DECRQKD Inquire a Key Definition DECRPFK Report definition of a Function Key DECRPAK Report definition of a Alphanumeric Key Soft Fonts (DRCS) DECDLD Downline Load Printing DECPEX Print Extent Mode DECPFF Print Form Feed Mode DSR Device Status Report (printer port) MC Media Copy DECSPRTT Select Printer Type DECSDPT Select Digital Printed Data Type DECSPPCS Select Proprinter Character Set Page 10
Terminal Communication and Synchronization BREAK XON XOFF ENQ Enquiry SRM Send Receive Mode DECXRLM Transmit Rate Limiting Mode VT420 DECMCM Modem Control Mode DECAAM Auto Answerback Mode DECLANS Load Answerback Message DECCANSM Conceal Answerback Message Mode DECNULM Ignore Null Mode DECHPDXM Half Duplex Mode DECSFC Select Flow Control DECSDDT Select Disconnect Delay Time DECSTRL Set Transmit Rate Limit DECSCS Select Communication Speed DECSCP Select Communication Port DECSPP Set Port Parameter Text Locator Extension DECEFR Enable Filter Rectangle UWS DECELR Enable Locator Reports UWS DECLKD Locator Key Definition UWS DECLRP Locator Report UWS DECRQLP Request Locator Position UWS DECSLE Select Locator Events UWS DSR Device Status Report (Locator Status) UWS Session Management Extension DECES Enable Sessions Documented Exceptions DECANM ANSI/VT52 Mode DECALN Screen Alignment DECAWM Autowrap Mode DECTST Invoke Confidence Test CRM Control Representation Mode Page 11